Ctenophores belong to the phylum Ctenophora, which contains around 100 to 150 known species. They are considered one of the ...

All insects belong to the phylum Arthropoda. But unlike other arthropods—like lobsters, spiders, or millipedes—insects have three pairs of jointed legs, segmented bodies, an exoskeleton ...

They belong to the Echinoidea, one of the five classes of the phylum Echinodermata, the others being holothurians, crinoids, starfish and brittlestars. Like all echinoderms, echinoids have a skeleton ...

HBSE Class 11th Biology Syllabus 2025: Board of School Education Haryana (BSEH), also popularly called HBSE Board is the official education board of Haryana, that provides students with all the ...